Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

The annotations already declare readOnlyHint=true, idempotentHint=true, destructiveHint=false, and openWorldHint=false, covering the safety profile. The description adds useful scope and output context: entries are for the signed-in user and include scores from -2 to 2 with drivers. It does not cover pagination, ordering, empty results, or authentication expectations, so it remains a moderate addition.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is a single efficient sentence with the core purpose front-loaded. Every clause contributes either scope, returned data, or the date-range constraint.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

For a simple read-only list tool with annotations covering safety and no output schema, the description gives the basic purpose, user scope, and entry contents. It is still incomplete for correct invocation because parameter semantics and return shape details such as pagination or ordering are missing.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema description coverage is 0%, so the description must compensate for the two undocumented parameters 'to' and 'from'. It only mentions 'a date range' and does not explain parameter names, date format, whether bounds are inclusive, or whether either side is optional.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Does the description clearly state what the tool does and how it differs from similar tools?

The description names a specific verb and resource: list the signed-in user's mood entries. It also states the date-range scope and what each entry contains. It does not explicitly distinguish this from vora_list_mood_drivers or the add/delete mood siblings, so it falls short of a 5.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Does the description explain when to use this tool, when not to, or what alternatives exist?

The phrase 'for a date range' gives implied usage context, but the description does not say when to use this instead of vora_list_mood_drivers or other mood-related siblings. There are no exclusions, prerequisites, or alternative-tool routing.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.